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发明公开
CN1552679A 异烯烃的生产工艺 有权

异烯烃的生产工艺
摘要：
本发明公开了一种异烯烃的生产工艺。其包括将含有异烯烃的混合烃和醇送入醚化反应器(R1)，得到的主要含有叔烷基醚的产品(P1)经第一分馏塔(C1)和第二分馏塔(C2)分离后，再经加热器(E1)加热后送入醚裂解反应器(R2)，得到主要含有未反应的叔烷基醚和异烯烃及醇的产品(P2)，所得产品经第三分馏塔(C3)脱重得到异烯烃；或者直接将高纯度叔烷基醚产品经加热汽化后送入醚裂解反应器，再经第三分馏塔(C3)脱重得到异烯烃。其特点是第二分馏塔(C2)塔顶物料以气相形式采出，这样可减少循环水用量和蒸汽用量，降低装置的能耗；本发明还可将醚裂解反应器(R2)出口的气相反应产物直接送入第三分馏塔(C3)，这样可减少蒸汽用量和总的循环水用量，进一步降低装置的能耗。
摘要（英）：

A process for preparing isoalkene includes such steps as etherifying reacting between the mixed hydrocarbon containing isoalkene and alcohol to obtain a resultant containing tetraalkyl ether, separating by the first and the second fractionating towers, heating, ether cracking reacting to obtain the resultant containing the unreacted tetraalkyl ether, isoalkene and alcohol, and removing heaving components by the third fractionating tower to obtain isoalkene. Its advantage is low consumption of water steam and energy.

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